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CVE
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CVE-2009-4418

Date: (C)2009-12-24   (M)2017-02-08 


The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.

CVSS Score: 5.0Access Vector: NETWORK
Exploit Score: 10.0Access Complexity: LOW
Impact Score: 2.9Authentication: NONE
 Confidentiality: NONE
 Integrity: NONE
 Availability: PARTIAL





Reference:
http://www.suspekt.org/2009/11/28/shocking-news-in-php-exploitation/
http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf

CPE    35
cpe:/a:php:php:5
cpe:/a:php:php:5.1
cpe:/a:php:php:5.0.0:rc3
cpe:/a:php:php:5.0.0:rc2
...
CWE    1
CWE-189

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